10 #include "metacube2.h"
15 class HTTPInput : public Input {
17 HTTPInput(const std::string &url, Input::Encoding encoding);
19 // Serialization/deserialization.
20 HTTPInput(const InputProto &serialized);
21 virtual InputProto serialize() const;
23 virtual void close_socket();
25 virtual std::string get_url() const { return url; }
27 virtual void add_destination(int stream_index);
29 virtual InputStats get_stats() const;
32 // Actually does the download.
33 virtual void do_work();
35 // Open a socket that connects to the given host and port. Does DNS resolving.
36 int lookup_and_connect(const std::string &host, const std::string &port);
38 // Parses a HTTP response. Returns false if it not a 200.
39 bool parse_response(const std::string &response);
41 // Stores the given data, looks for Metacube blocks (skipping data if needed),
42 // and calls process_block() for each one.
43 void process_data(char *ptr, size_t bytes);
45 // Drops <num_bytes> bytes from the head of <pending_data>,
46 // and outputs a warning.
47 void drop_pending_data(size_t num_bytes);
49 void process_metacube_metadata_block(const metacube2_block_header &hdr, const char *payload, uint32_t payload_size);
56 CLOSING_SOCKET, // Due to error.
60 std::vector<int> stream_indices;
62 // The URL and its parsed components.
64 std::string host, port, path;
66 // What the input stream is to be interpreted as (normally Metacube).
67 Input::Encoding encoding;
69 // The HTTP request, with headers and all.
70 // Only relevant for SENDING_REQUEST.
73 // How many bytes we've sent of the request so far.
74 // Only relevant for SENDING_REQUEST.
75 size_t request_bytes_sent;
77 // The HTTP response we've received so far. Only relevant for RECEIVING_HEADER.
80 // The HTTP response headers we want to give clients for this input.
81 std::string http_header;
83 // The stream heder we want to give clients for this input.
84 std::string stream_header;
86 // Data we have received but not fully processed yet.
87 std::vector<char> pending_data;
89 // If <pending_data> starts with a Metacube header,
91 bool has_metacube_header = false;
93 // The socket we are downloading on (or -1).
96 // Mutex protecting <stats>.
97 mutable std::mutex stats_mutex;
99 // The current statistics for this connection. Protected by <stats_mutex>.
102 // Number of (started) connection attempts since last data byte was successfully read.
103 unsigned num_connection_attempts = 0;
105 // If set, don't log anything related to connections.
106 // (Only set if we've had enough unsuccessful connection attempts.)
107 bool suppress_logging = false;
109 // Last time we made a connection with logging enabled.
110 // (Initially at some point before the epoch.)
111 timespec last_verbose_connection { -3600, 0 };
113 // If we've received a Metacube2 PTS metadata block, it belongs to the
114 // next regular block we receive, and is stored here in the meantime.
115 // If we haven't received one yet (or we've already received the
116 // corresponding data block), this is empty, ie., timebase_num == 0.
117 RationalPTS next_block_pts;
120 #endif // !defined(_HTTPINPUT_H)